package rbd

import (
    "context"
    "github.com/ceph/go-ceph/rbd"
    "github.com/ceph/go-ceph/rados"
    "volux/pkg/storage"
    "fmt"
    "time"
)

type RBDAdapter struct {
    conn   *rados.Conn
    ioctx  *rados.IOContext
    config RBDConfig
}

type RBDConfig struct {
    Monitors  []string
    User      string
    Key       string
    Pool      string
    Namespace string
}

func NewRBDAdapter(config RBDConfig) (*RBDAdapter, error) {
    conn, err := rados.NewConnWithUser(config.User)
    if err != nil {
        return nil, err
    }

    err = conn.SetConfigOption("mon_host", config.Monitors[0])
    if err != nil {
        return nil, err
    }

    err = conn.Connect()
    if err != nil {
        return nil, err
    }

    ioctx, err := conn.OpenIOContext(config.Pool)
    if err != nil {
        conn.Shutdown()
        return nil, err
    }

    return &RBDAdapter{
        conn:   conn,
        ioctx:  ioctx,
        config: config,
    }, nil
}

func (r *RBDAdapter) Create(ctx context.Context, name string, sizeBytes uint64) error {
    // 创建RBD镜像
    image, err := rbd.Create(r.ioctx, name, sizeBytes, 22)
    if err != nil {
        return err
    }
    defer image.Close()

    return nil
}

func (r *RBDAdapter) Delete(ctx context.Context, name string) error {
    image := rbd.OpenImage(r.ioctx, name, rbd.NoSnapshot)
    if image == nil {
        return fmt.Errorf("image not found: %s", name)
    }
    defer image.Close()
    return image.Remove()
}

func (r *RBDAdapter) Resize(ctx context.Context, name string, newSizeBytes uint64) error {
    image := rbd.OpenImage(r.ioctx, name, rbd.NoSnapshot)
    if image == nil {
        return fmt.Errorf("image not found: %s", name)
    }
    defer image.Close()
    return image.Resize(newSizeBytes)
}

func (r *RBDAdapter) GetInfo(ctx context.Context, name string) (*storage.VolumeInfo, error) {
    image := rbd.OpenImage(r.ioctx, name, rbd.NoSnapshot)
    if image == nil {
        return nil, fmt.Errorf("image not found: %s", name)
    }
    defer image.Close()

    size, err := image.GetSize()
    if err != nil {
        return nil, err
    }

    return &storage.VolumeInfo{
        Name:      name,
        SizeBytes: size,
        Status:    "available",
        CreatedAt: time.Now().Format(time.RFC3339),
        UpdatedAt: time.Now().Format(time.RFC3339),
    }, nil
}

// ...implement other interface methods...
